The worst-kept secret on Capitol Hill is that Democrats have always planned to tax health benefits to pay for their "universal" health-care plans. Now White House aides are whispering that they're also open to the idea. Maybe they will all now apologize to John McCain for trashing his proposal to do the same thing in the Presidential campaign.

Democrats are desperately searching for the $1.2 trillion and more they'll need to subsidize middle-class health coverage. With deficits already at epic levels, more spending is politically a harder sell. So they're now circling the tax deduction that employers receive to offer insurance to their workers for the same reason that Willie Sutton robbed banks, because that's where the money is.

Most likely, Democrats will cap the exclusion by income or cost of the health plan, so that those with the most gold-plated benefits pay more for the privilege. The Congressional Budget Office estimates that a ceiling at the 75th percentile of current levels would generate $452 billion over 10 years.

But hold on. John McCain also wanted to reform this tax break, which goes only to business. Individuals don't get the same tax break if they buy insurance themselves. Mr. McCain proposed to gradually replace the workplace deduction with a refundable tax credit available to all Americans, regardless of where they acquired their coverage. Mr. Obama attacked him ruthlessly for it.

"And this is your plan, John," he said at one debate. "For the first time in history, you will be taxing people's health-care benefits." Mr. Obama added that the McCain proposal was "radical," "the biggest middle-class tax increase in history," "out of line with our basic values" and that "the choice you'll have is having your employer no longer provide you health care." Combined with heavy advertising and Mr. McCain's inability to defend his own ideas, these distortions were highly effective.

In a deeply cynical turnabout, the White House now says a tax on employer benefits is acceptable as long as someone else proposes it. We suppose anyone would be embarrassed to endorse a fundamental insight that he once claimed was vile and destructive...